CN107254644A - A kind of high intensity alumina-base material and preparation method thereof - Google Patents
A kind of high intensity alumina-base material and preparation method thereof Download PDFInfo
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- CN107254644A CN107254644A CN201710396563.0A CN201710396563A CN107254644A CN 107254644 A CN107254644 A CN 107254644A CN 201710396563 A CN201710396563 A CN 201710396563A CN 107254644 A CN107254644 A CN 107254644A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/04—Light metals
- C22C49/06—Aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
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Abstract
The invention belongs to technical field of metal material, more particularly to a kind of high intensity alumina-base material and preparation method thereof；The alumina-base material contains following raw material fine aluminium 75~105, aluminium borate 35~55, carbon nano-fiber 5~25, composite metal powder 4~15, enhancing particle 10~30 by weight；The effective mechanical property for enhancing alumina-base material of the invention, further enhance the intensity of alumina-base material, simultaneously, the present invention is used as matrix using fine aluminium and aluminium borate mixing, the enhancing phase of particle shape is with the addition of in the molten state, so that the two obtains the fusion of homogeneous, the intensity of alumina-base material is further improved.
Description
Technical field
The invention belongs to technical field of metal material, more particularly to a kind of high intensity alumina-base material and preparation method thereof.
Background technology
Composite is the material with powerful vitality answered Development of Modern Science demand and emerged, be by two kinds or
Two or more compositions are different, and property is different, and also different compatibility material is reasonably combined shape for physically sometimes
And a kind of material being made, it is assigned excellent not available for homogenous material with playing the speciality of various materials to greatest extent
Benign energy, the performance of composite also has the key character of designability, and aluminium has many features on making composite, such as
Light weight, density are small, plasticity is good, and aluminum-base composite technology is easily mastered, it is easy to processing etc., in addition, aluminum matrix composite is than strong
Degree and specific stiffness are high, and high-temperature behavior is good, more resistant to tired and more resistant, and damping capacity is good, and thermal coefficient of expansion is low, with other composite woods
Material is the same, and it can combine specific mechanics and physical, and aluminium and aluminium alloy are well suited for making the matrix of metal-base composites, aluminium
Aboundresources, is readily available, and reasonable price, density is small, light weight, specific strength with it is bigger than modulus of elasticity, fusing point is not high, plasticity
Well, manufacturing process and equipment are not very complicated, it is easy to second is combined and carried out with reinforcing material and is processed, in addition, also having very well
Electric conductivity and thermal conductivity, corrosion stability etc., these are all that composite is to meet the characteristic that use requirement should possess, and are also aluminium
The main cause that based composites are rapidly developed.
With the fast development of aluminum matrix composite, application field is also constantly expanding, be used in electronics, automobile, aviation,
The fields such as space flight, war industry, communications and transportation, to the performance requirement of aluminum matrix composite also increasingly stringent, wherein, by force
Degree is the important indicator for examining aluminum matrix composite, while being also the rigid index for being used in every field, but is prepared at present
Aluminum matrix composite quality it is uneven, it is difficult to meet the demand of existing market, such as contain in the alumina-base material that some are prepared
The impurity such as Mn, Cr, these impurity can cause alloy formation brittlement phase, directly reduce the hardness of alumina-base material, also more such as,
When preparing composite, addition SiC strengthens the purpose of composite material strength to reach, but with the increasing of SiC volume fractions
Greatly, the intensity and modulus of composite is all greatly increased, but plasticity is but significantly reduced, it is seen then that at present, on the one hand
Due to impurity treatment not science, cause to be formed in material can brittlement phase, reduce intensity, or be, by additional reinforcing agent, to carry
While high intensity, there are the other performances of infringement, equally limit the application of composite, in consideration of it, intensity is examination aluminium base
The important indicator of composite, while be also the rigid index for being used in every field, therefore when preparing aluminum matrix composite,
While ensureing the integrality of other performance index, the intensity for further improving alumina-base material enables it to be used in every field
It is the emphasis studied at present.
The content of the invention
The present invention is in order to solve the above technical problems, there is provided a kind of high intensity alumina-base material and preparation method thereof.
Realized particular by following technical scheme：
A kind of high intensity alumina-base material, the alumina-base material contains following raw material fine aluminium 75~105, boric acid by weight
Aluminium 35~55, carbon nano-fiber 5~25, composite metal powder 4~15, enhancing particle 10~30；
Described enhancing particle, is made up of reinforcing agent and coating agent, wherein, the mass ratio of coating agent and reinforcing agent is 1.5
~1.8: 1.
More electedly, the alumina-base material contains following raw material fine aluminium 86, aluminium borate 45, carbon nano-fiber by weight
18th, composite metal powder 9, enhancing particle 20.
In order to further improve the performance of alumina-base material, the alumina-base material also contains ATOC, poly- second
Glycol and rare earth element, on the basis of alumina-base material gross weight, the addition of ATOC is alumina-base material gross weight
The 2~5% of amount, the addition of polyethylene glycol is the 3~8% of alumina-base material gross weight, and the addition of rare earth element is aluminium base
Expect the 1~3% of gross weight, the preferably addition of ATOC is the 3.5% of alumina-base material gross weight, poly- second two
The addition of alcohol is the 5% of alumina-base material gross weight, and the addition of rare earth element is the 2% of alumina-base material gross weight, the present invention
In also add ATOC, property stable plasticizer smaller as a kind of volatility can improve the casting of preparation
The toughness of ingot, improves processing characteristics, further lifting processing intensity, by the addition of polyethylene glycol, is effectively to be combined
Metal powder and enhancing particle are more evenly distributed in the fine aluminium and aluminium borate of molten state so that the alumina-base material property of preparation
It is stable, play preferable peptizaiton.
In order to further improve the performance of alumina-base material, described reinforcing agent is TiB2 and Al2O3 by 1: 0.35~0.45
Mass ratio be mixed to prepare.
In order to further improve the performance of alumina-base material, described coating agent is one kind in zinc and nickel.
In order to further improve the performance of alumina-base material, described composite metal powder including copper powder, vanadium powder, chromium powder, with aluminium
On the basis of sill gross weight, the addition of copper powder is the 0.8~1.2% of alumina-base material gross weight, and the addition of vanadium powder is aluminium
The 0.3~0.5% of sill gross weight, the addition of chromium powder is the 1~2% of alumina-base material gross weight.
The preparation method of described high intensity alumina-base material, comprises the following steps：
(1) enhancing particle is prepared：Reinforcing agent is crushed to particle diameter for 250~280 μm, after coating agent is melted, with enhancing
Agent is mixed, and is cooled to 125~135 DEG C, stands 18~22h, particle must be strengthened by crushing；
(2) alumina-base material is prepared：The fine aluminium of molten state and the aluminium borate of molten state are mixed, composite metal powder and increasing is added
Strong particle, is mixed, mist projection granulating, then is mixed with remaining raw material, and the cold moudling under 650~700Mpa pressure is placed in
1200~1300 DEG C of sinter moldings.
In order to further improve the performance of alumina-base material, in step (2) when addition composite metal powder and enhancing particle, it is
After first mixing the fine aluminium of molten state and the aluminium borate of molten state, 2~5h is stood under 715~730 DEG C of constant temperature, then add
Enter composite metal powder, stir 150~180min, add enhancing particle, wherein, during the entire process of step (2) reaction, lead to
Enter inert gas to reaction to terminate, the inert gas, refer to not react with reactant with product react it is any
Middle one or more in a kind of gas or admixture of gas, such as periodic table of elements zero group gas, preferably nitrogen, argon gas and helium
One or more in gas, the mode that is passed through is from bottom to top in melting or when addition composite metal powder is with enhancing particle, to add
Inert gas, one is to be avoided that aluminum is aoxidized in molten condition, and two be that can produce bubble in the solution, by floating
Bubble removes the impurity such as oxide, is easy to Salvage and Wreck Removal.
In order to further improve the performance of alumina-base material, described enhancing particle, further limit its particle diameter as 300~
350μm。
In summary, the beneficial effects of the present invention are：The alumina-base material that the present invention is provided is with titanium diboride and oxidation
Aluminium is carried out after metal spraying, and with composite metal powder together as enhancing phase, titanium diboride and aluminum oxide first has preferably hard
Degree, then after the coating for passing through metal, effectively enhances the mechanical property of alumina-base material, meanwhile, with the addition of aluminum oxide can be with
The alumina-base material of preparation carries out good combination, with the compatibility in performance, meanwhile, composite metal powder is also added, enters one
The intensity of step enhancing alumina-base material, meanwhile, the present invention with the addition of in the molten state using fine aluminium and aluminium borate mixing as matrix
The enhancing phase of particle shape so that the two obtains the fusion of homogeneous, further improves the intensity of alumina-base material.
Embodiment
The embodiment to the present invention is described in further detail below, but the invention is not limited in these realities
Mode is applied, any improvement or replacement on the present embodiment essence spirit still falls within the claims in the present invention claimed
Scope.
Embodiment 1
A kind of high intensity alumina-base material, the alumina-base material contains following raw material fine aluminium 75kg, aluminium borate by weight
35kg, carbon nano-fiber 5kg, composite metal powder 4kg, enhancing particle 10kg；
Described enhancing particle, is made up of reinforcing agent and coating agent, wherein, the mass ratio of coating agent and reinforcing agent is 1.5:
1。
Described reinforcing agent, is that TiB2 and Al2O3 are mixed to prepare by 1: 0.35 mass ratio.
Described coating agent, preferably zinc.
Described composite metal powder including copper powder, vanadium powder, chromium powder, on the basis of alumina-base material gross weight, the addition of copper powder
Measure as the 0.8% of alumina-base material gross weight, the addition of vanadium powder is the 0.3% of alumina-base material gross weight, the addition of chromium powder is
The 1% of alumina-base material gross weight.
The alumina-base material also contains ATOC, polyethylene glycol and rare earth element, with alumina-base material gross weight
On the basis of amount, the addition of ATOC is the 2% of alumina-base material gross weight, and the addition of polyethylene glycol is aluminium base
The 3% of material gross weight, the addition of rare earth element is the 1% of alumina-base material gross weight.
The preparation method of described high intensity alumina-base material, comprises the following steps：
(1) enhancing particle is prepared：Reinforcing agent is crushed to particle diameter for 250 μm, it is mixed with reinforcing agent after coating agent is melted
Close, be cooled to 125 DEG C, stand 18h, crush particle diameter is 300 μm of enhancing particle；
(2) alumina-base material is prepared：The fine aluminium of molten state and the aluminium borate of molten state are mixed, in 715 DEG C of constant temperature
Lower standing 2h, adds composite metal powder, stirs 150min, adds enhancing particle, mixes, mist projection granulating, then with it is remaining
Raw material is mixed, and the cold moudling under 650Mpa pressure is placed in 1200 DEG C of sinter moldings, during the entire process of reaction, is led to
Enter inert gas to reaction to terminate.
Embodiment 2
A kind of high intensity alumina-base material, the alumina-base material contains following raw material fine aluminium 105kg, aluminium borate by weight
55kg, carbon nano-fiber 25kg, composite metal powder 15kg, enhancing particle 30kg；
Described enhancing particle, is made up of reinforcing agent and coating agent, wherein, the mass ratio of coating agent and reinforcing agent is 1.8:
1。
Described reinforcing agent, is that TiB2 and Al2O3 are mixed to prepare by 1: 0.45 mass ratio.
Described coating agent, preferably nickel.
Described composite metal powder including copper powder, vanadium powder, chromium powder, on the basis of alumina-base material gross weight, the addition of copper powder
Measure as the 1.2% of alumina-base material gross weight, the addition of vanadium powder is the 0.5% of alumina-base material gross weight, the addition of chromium powder is
The 2% of alumina-base material gross weight.
The alumina-base material also contains ATOC, polyethylene glycol and rare earth element, with alumina-base material gross weight
On the basis of amount, the addition of ATOC is the 5% of alumina-base material gross weight, and the addition of polyethylene glycol is aluminium base
The 8% of material gross weight, the addition of rare earth element is the 3% of alumina-base material gross weight.
The preparation method of described high intensity alumina-base material, comprises the following steps：
(1) enhancing particle is prepared：Reinforcing agent is crushed to particle diameter for 280 μm, it is mixed with reinforcing agent after coating agent is melted
Close, be cooled to 135 DEG C, stand 22h, crush particle diameter is 350 μm of enhancing particle；
(2) alumina-base material is prepared：The fine aluminium of molten state and the aluminium borate of molten state are mixed, in 730 DEG C of constant temperature
2~5h of lower standing, adds composite metal powder, stirs 180min, adds enhancing particle, mixes, mist projection granulating, then with residue
Raw material mix, the cold moudling under 700Mpa pressure is placed in 1300 DEG C of sinter moldings, during the entire process of reaction,
Inert gas to reaction is passed through to terminate.
Embodiment 3
A kind of high intensity alumina-base material, the alumina-base material contains following raw material fine aluminium 86kg, aluminium borate by weight
45kg, carbon nano-fiber 18kg, composite metal powder 9kg, enhancing particle 20kg；
Described enhancing particle, is made up of reinforcing agent and coating agent, wherein, the mass ratio of coating agent and reinforcing agent is 1.7:
1。
Described reinforcing agent, is that TiB2 and Al2O3 are mixed to prepare by 1: 0.4 mass ratio.
Described coating agent, preferably nickel.
Described composite metal powder including copper powder, vanadium powder, chromium powder, on the basis of alumina-base material gross weight, the addition of copper powder
Measure as the 1% of alumina-base material gross weight, the addition of vanadium powder is the 0.4% of alumina-base material gross weight, the addition of chromium powder is aluminium
The 1.5% of sill gross weight.
The alumina-base material also contains ATOC, polyethylene glycol and rare earth element, with alumina-base material gross weight
On the basis of amount, the addition of ATOC is the 3.5% of alumina-base material gross weight, and the addition of polyethylene glycol is aluminium
The 5% of sill gross weight, the addition of rare earth element is the 2% of alumina-base material gross weight.
The preparation method of described high intensity alumina-base material, comprises the following steps：
(1) enhancing particle is prepared：Reinforcing agent is crushed to particle diameter for 270 μm, it is mixed with reinforcing agent after coating agent is melted
Close, be cooled to 130 DEG C, stand 20h, crush particle diameter is 330 μm of enhancing particle；
(2) alumina-base material is prepared：The fine aluminium of molten state and the aluminium borate of molten state are mixed, in 725 DEG C of constant temperature
Lower standing 3h, adds composite metal powder, stirs 170min, adds enhancing particle, mixes, mist projection granulating, then with it is remaining
Raw material is mixed, and the cold moudling under 680Mpa pressure is placed in 1250 DEG C of sinter moldings, during the entire process of reaction, is led to
Enter inert gas to reaction to terminate.
Embodiment 4
A kind of high intensity alumina-base material, the alumina-base material contains following raw material fine aluminium 75kg, aluminium borate by weight
55kg, carbon nano-fiber 5kg, composite metal powder 15kg, enhancing particle 10kg；
Described enhancing particle, is made up of reinforcing agent and coating agent, wherein, the mass ratio of coating agent and reinforcing agent is 1.5:
1。
Described reinforcing agent, is that TiB2 and Al2O3 are mixed to prepare by 1: 0.45 mass ratio.
Described coating agent, preferably zinc.
Described composite metal powder including copper powder, vanadium powder, chromium powder, on the basis of alumina-base material gross weight, the addition of copper powder
Measure as the 0.8% of alumina-base material gross weight, the addition of vanadium powder is the 0.5% of alumina-base material gross weight, the addition of chromium powder is
The 1% of alumina-base material gross weight.
The alumina-base material also contains ATOC, polyethylene glycol and rare earth element, with alumina-base material gross weight
On the basis of amount, the addition of ATOC is the 2% of alumina-base material gross weight, and the addition of polyethylene glycol is aluminium base
The 8% of material gross weight, the addition of rare earth element is the 1% of alumina-base material gross weight.
The preparation method of described high intensity alumina-base material, comprises the following steps：
(1) enhancing particle is prepared：Reinforcing agent is crushed to particle diameter for 250 μm, it is mixed with reinforcing agent after coating agent is melted
Close, be cooled to 135 DEG C, stand 22h, crush particle diameter is 300 μm of enhancing particle；
(2) alumina-base material is prepared：The fine aluminium of molten state and the aluminium borate of molten state are mixed, in 730 DEG C of constant temperature
Lower standing 5h, adds composite metal powder, stirs 150min, adds enhancing particle, mixes, mist projection granulating, then with it is remaining
Raw material is mixed, and the cold moudling under 650Mpa pressure is placed in 1300 DEG C of sinter moldings, during the entire process of reaction, is led to
Enter inert gas to reaction to terminate.
Embodiment 5
A kind of high intensity alumina-base material, the alumina-base material contains following raw material fine aluminium 105kg, aluminium borate by weight
35kg, carbon nano-fiber 25kg, composite metal powder 4kg, enhancing particle 30kg；
Described enhancing particle, is made up of reinforcing agent and coating agent, wherein, the mass ratio of coating agent and reinforcing agent is 1.8:
1。
Described reinforcing agent, is that TiB2 and Al2O3 are mixed to prepare by 1: 0.35 mass ratio.
Described coating agent, preferably nickel.
Described composite metal powder including copper powder, vanadium powder, chromium powder, on the basis of alumina-base material gross weight, the addition of copper powder
Measure as the 1.2% of alumina-base material gross weight, the addition of vanadium powder is the 0.5% of alumina-base material gross weight, the addition of chromium powder is
The 1% of alumina-base material gross weight.
The alumina-base material also contains ATOC, polyethylene glycol and rare earth element, with alumina-base material gross weight
On the basis of amount, the addition of ATOC is the 2% of alumina-base material gross weight, and the addition of polyethylene glycol is aluminium base
The 8% of material gross weight, the addition of rare earth element is the 3% of alumina-base material gross weight.
The preparation method of described high intensity alumina-base material, comprises the following steps：
(1) enhancing particle is prepared：Reinforcing agent is crushed to particle diameter for 250 μm, it is mixed with reinforcing agent after coating agent is melted
Close, be cooled to 125 DEG C, stand 22h, crush particle diameter is 350 μm of enhancing particle；
(2) alumina-base material is prepared：The fine aluminium of molten state and the aluminium borate of molten state are mixed, in 715 DEG C of constant temperature
Lower standing 5h, adds composite metal powder, stirs 150min, adds enhancing particle, mixes, mist projection granulating, then with it is remaining
Raw material is mixed, and the cold moudling under 650~700Mpa pressure is placed in 1300 DEG C of sinter moldings, the whole process of reaction
In, it is passed through inert gas to reaction and terminates.
Comparative example 1
By taking embodiment 1 as an example, the preparation for carrying out alumina-base material is constituted using identical raw material, difference is that this is right
It is prepared by the preparation method for traditional alumina-base material that ratio is used.
Comparative example 2
This comparative example prepares alumina-base material according to the method for embodiment 1, and difference is, without multiple in composition of raw materials
Close metal powder.
Comparative example 3
This comparative example prepares alumina-base material according to the method for embodiment 1, and difference is, without increasing in composition of raw materials
Strong particle.
Comparative example 4
This comparative example prepares alumina-base material according to the method for embodiment 1, and difference is, when preparing enhancing particle,
Without coating agent, the preparation of alumina-base material is directly carried out using reinforcing agent as enhancing particle.
Comparative example 5
This comparative example prepares alumina-base material according to the method for embodiment 1, and difference is, when preparing enhancing particle,
After being coated using the coating material in addition to zinc or nickel to reinforcing agent, alumina-base material is prepared.
Comparative example 6
This comparative example prepares alumina-base material according to the method for embodiment 1, and difference is, in composition of raw materials, does not add
Plus rare earth element or the preparation for replacing carrying out alumina-base material with other materials after rare earth element.
Performance test
By taking automobile brake disc as an example, the alumina-base material prepared with embodiment 1~5 and comparative example 1~6 prepares automobile brake
Disk, the stretching of the automobile brake disc prepared using the standard by national standard GBT228 to embodiment 1~5 and comparative example 1~6 is strong
Degree, yield strength, elongation at break, modulus of elasticity and Brinell hardness are tested, as a result as shown in table 1：
Table 1
As seen from the above table, by taking automobile brake disc as an example, the performance of brake disc prepared by embodiment 1~5 is substantially better than contrast
The brake disc of the preparation of example 1~6, the data of upper table are made by taking embodiment 1 as an example, the property of the brake disc prepared from embodiment 1
It can be understood with the performance comparison of the brake disc of the preparation of comparative example 1~6, tensile strength, yield strength, elongation at break, elasticity
Modulus and Brinell hardness have different degrees of lifting, it is seen that the mechanical property of product prepared by the alumina-base material that the present invention is provided
Effective lifting is obtained for, herein it should be noted that being to be set with embodiment 1 for standard in the design of comparative example
Fixed, but when being that standard carries out the design of identical comparative example with embodiment 2~5, can equally be obviously improved mechanical property.
Claims (10)
1. a kind of high intensity alumina-base material, it is characterised in that the alumina-base material contains following raw material fine aluminium 75 by weight
~105, aluminium borate 35~55, carbon nano-fiber 5~25, composite metal powder 4~15, enhancing particle 10~30；
Described enhancing particle, is made up of reinforcing agent and coating agent, wherein, the mass ratio of coating agent and reinforcing agent is 1.5~1.8
∶1。
2. high intensity alumina-base material as claimed in claim 1, it is characterised in that the alumina-base material contain it is following by weight
Raw material fine aluminium 86, aluminium borate 45, carbon nano-fiber 18, composite metal powder 9, enhancing particle 20.
3. high intensity alumina-base material as claimed in claim 1, it is characterised in that the alumina-base material also contains acetyl tributyl citrate
Three monooctyl esters, polyethylene glycol and rare earth element, on the basis of alumina-base material gross weight, the addition of ATOC is aluminium
The 2~5% of sill gross weight, the addition of polyethylene glycol is the 3~8% of alumina-base material gross weight, the addition of rare earth element
Measure as the 1~3% of alumina-base material gross weight.
4. high intensity alumina-base material as claimed in claim 1, it is characterised in that on the basis of alumina-base material gross weight, acetyl
The addition of trioctyl lemon acid is the 3.5% of alumina-base material gross weight, and the addition of polyethylene glycol is alumina-base material gross weight
5%, the addition of rare earth element is the 2% of alumina-base material gross weight.
5. high intensity alumina-base material as claimed in claim 1, it is characterised in that described reinforcing agent, be TiB2 and Al203 by
1: 0.35~0.45 mass ratio is mixed to prepare.
6. high intensity alumina-base material as claimed in claim 1, it is characterised in that described coating agent, is one in zinc and nickel
Kind.
7. high intensity alumina-base material as claimed in claim 1, it is characterised in that described composite metal powder including copper powder, vanadium
Powder, chromium powder, on the basis of alumina-base material gross weight, the addition of copper powder is the 0.8~1.2% of alumina-base material gross weight, vanadium powder
Addition be the 0.3~0.5% of alumina-base material gross weight, the addition of chromium powder is the 1~2% of alumina-base material gross weight.
8. the preparation method of high intensity alumina-base material as claimed in claim 1, it is characterised in that comprise the following steps：
(1) enhancing particle is prepared：Reinforcing agent is crushed to particle diameter for 250~280 μm, it is mixed with reinforcing agent after coating agent is melted
Close, be cooled to 125~135 DEG C, stand 18~22h, particle must be strengthened by crushing；
(2) alumina-base material is prepared：The fine aluminium of molten state and the aluminium borate of molten state are mixed, composite metal powder and enhancing is added
Grain, is mixed, mist projection granulating, then is mixed with remaining raw material, the cold moudling under 650~700Mpa pressure, it is placed in 1200~
1300 DEG C of sinter moldings.
9. the preparation method of high intensity alumina-base material as claimed in claim 8, it is characterised in that addition is compound in step (2)
It is after first mixing the fine aluminium of molten state and the aluminium borate of molten state, in 715~730 DEG C of perseverance when metal powder and enhancing particle
2~5h is stood under the conditions of temperature, composite metal powder is added, 150~180min is stirred, adds enhancing particle, wherein, in step
(2) during the entire process of reacting, it is passed through inert gas to reaction and terminates.
10. high intensity alumina-base material as claimed in claim 1, it is characterised in that described enhancing particle, its particle diameter is 300
~350 μm.
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| CN108624829A (en) * | 2018-05-21 | 2018-10-09 | 江苏理工学院 | A kind of high resiliency aluminum matrix composite and preparation method thereof |
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